Can anyone teach me how to do this??

Mathematics

1 answer:

charle [14.2K]3 years ago

6 0

Answer is 2 your welcome

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4x^2 = 92 + 7x solve the equation using the guadratic formula, show all work

katovenus [111]

$4x^2=92+7x\ \ \ \ |-4x^2\\\\-4x^2+7x+92=0\\\\a=-4;\ b=7;\ c=92\\\\b^2-4ac=7^2-4\cdot(-4)\cdot92=49+1472=1521\\\\\sqrt{b^2-4ac}=\sqrt{1521}=39\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\x_1=\dfrac{-7-39}{2\cdot(-4)}=\dfrac{-46}{-8}=\dfrac{23}{4}\\\\x_2=\dfrac{-7+39}{2\cdot(-4)}=\dfrac{32}{-8}=-4$

$\text{Answer:}\ A.\ \left\{\dfrac{23}{4};\ -4\right\}$

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4 years ago

What is greater 60% or 5.8

Ray Of Light [21]

I think 5.8 would be greater than 60% as it become 0.6

8 0

3 years ago

Read 2 more answers

Mora is using a map to find the distance between her house and her cousin's house. She knows that $2$ centimeters on the map rep

Ahat [919]

Answer:

3,000 miles

Step-by-step explanation:

Calculation for the distance, in miles, between Mora's house and her cousin's house

Distance in miles =(2centimeters÷20centimeters) *300 miles

Distance in miles=10*300 miles

Distance in miles= 3,000 miles

Therefore the distance, in miles, between Mora's house and her cousin's house will be 3,000 miles

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3 years ago

If a musician uses his credit card to pay for a new violin that costs $2,900 and does not pay on it until the second month, what

OLEGan [10]

Answer:

$97.15.

Step-by-step explanation:

We have been given that a musician uses his credit card to pay for a new violin that costs $2,900 and does not pay on it until the second month. The interest rate of credit card is 3.35% monthly.

We will use interest formula to solve our given problem.

$I=PrT$ , where,